Building Management System Bms Server Software Computer Science Essay

Building anxiety System Bms waiter Softw be Computer Science EssayAs we known BMS are created to controlled central computing machine rule which has 3 basis functions, which is controlling, monitoring and also optimizing.However, there is a BMS boniface software product to facilitate the whole kit of facilities management which to functioning within the building and also to fulfill the building operation and maintenance.General compulsionThe BMS horde system is composed of 3 fixates of reducant computers, which communicate with several kinds of input or output devices, subjugate computer system and higher order computer systems. The sections expound the software essential to achieve the desire functionality of the BMS.The software design is based upon real time data acquisitions and control capability. Data including picture values, parameters, messages, instructions, databases bother statements, master clock synchronization and other forms of computers data ex inten sify may originates from or be designate for other sub-system and computers and database which may form pat of TAMS.It is responsibility of the BMS Sub-System Contractor to develop, test, document and debug software port routines and supporting hardware to accomplish the interface requirement of BMS to TAMS and any other system or sub-system with which the BMS is required to communicate.The BMS Sub-System Contractor give stomach software for the BMS Sub-System, which is proven in actual field installation of a similar size and scope. The BMS Sub-System Contractor will provide have intercourse information and responses with tenders including reference sites, name, and telephone subject of reference site contracts. packet LicensingKLIAB respects the propriety nature of certain software. Commercially available software purchased from a third party such as Microsoft Windows, UNIX, OS/2 and similar software packages are provided. Licenses are bound with the operation and maintenanc e manuals for BMS system.BMS manufacturers proprietary software is provided completey licensed. All BMS manufacturers proprietary software will have complete sources codes, programs listings and supporting information deposited in an escrow account at the BMS Sub-System Contractors expense.BMS Server packageOperating SystemThe BMS server computers will utilize a multi-user, multi tasking operating system designed for knob server operations. The operating system will support all the required software functions and application described in the BMS specifications.Standard services supported by Operating System on serves will allow in the followingMulti- tasking Multi- user supportPOSIX 1003, 1 complianceTCP/IP, SLIP mesh SupportNetwork File System (NFS)C language complierThe BMS Sub-System Contractor will provide to the SMC one complete set of operating system user manuals and programmers references manuals bound as part of each BMS Operation and Maintenance Manual.BMS packet Exe cutiveThe BMS Sub-System Contractor shall provide a complete BMS software executive module which provides at marginalWorkstation communicating sport affecter quering and taskingI/O Channel support for up to 99 communication channelDisk optimization routinesOn-line database backup and restorationMemory management functionsSoftware watchdog functionsNetworking functionsHousekeeping functionsDiagnostic routinesServer Redundancy SoftwareThe BMS Sub-System Contractor will provide six complete server computers arranged as three sets of redundant hot standby server system. distributively server computer are equipped with all hardware and software with complete capability to support the designated BMS tasks.Each server will coexist on the BMS network and are able to automatically assume full operation of BMS without any loss of data, scandalise, or status information.The redundancy software provides full databases charges made to the old server are propagated to the backup server witho ut any operator intervention.Changeovers from primary to backup server are accomplished within 10seconds, whether manually initialed or automatically initialed.Detection of any server software instruction execution failure will cause the automatic transfer of all server functions to the backup server and will initiate a primary server failure alarm.These alarm are distributed a BMS Alarm discussion Software specifications. These sewer failure alarms are classified at the highest priority level.The BMS Sub-System Contractor will provide a hardware or software switch to allow the user selection of which server computer is the primary server, and which is the backup server.Such selections are made freely and at any time during the frequent operations of the BMS Server System.It is possible at any time to completely remove one of the server computers for repair, maintenance or other need without disrupting normal BMS operations.BMS workstations will automatically switch the user inte rface and TCP/IP address to the server in control of the BMS, without operator intervention.Alarm Handling SoftwareComplete Alarm Handling Software modules are provided in the BMS server software package.The alarm discourse software will provide comprehensive alarm detection and management facilities to allow fast and correct nonification to the BMS of abnormal point values or conditions.Alarm Attribute TableEach and all BMS point capable of alarm will have alarm attribute assigned in an alarm attribute table.The alarm attribute table will govern the way and means by which the point alarm is reported by the BMS.The alarm attribute table are on-line definable and unsure by an authorized BMS user. Each point defined in the Alarm Attribute Table will, upon change of state, read the table and be acted upon accordingly.For each point the following attribute are definablePrint alarm/ inhibit printingPrinters assigned to print point alarmPrint alarm whollyPrint all point eventsWorkst ation assigned to display alarmAlarm class 1-4 (normal, urgent, low, journal)Alarm priority 1-9 (9 priorities within each class)Unanswered Alarm SoftwareIf dedicated BMS workstation is been assigned to receive an alarm, each future alarm will start a software timer who starts upon alarm generations and ends upon alarm acknowledgement.If an alarm is not acknowledge within a user defined number of seconds, an unanswered alarm are automatically generates and displayed at the EOC monitoring room BMS workstations, whether or not the EOC monitoring room workstation were assigned to receive the victor acknowledge alarm. The unanswered alarm events are recorded as a transaction in the diachronic transaction database file.ConclusionThese software were helped the facilities management functioning within the building by utilizing Building Management System to fulfill the building operation and maintenance. It is also helped to ease of information availability problem nosology and helped co mputerized maintenance scheduling. However, this software was maintained effective use of maintenance staff and it is give more fulfill an occupants.